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The plasma membrane is the membrane that surrounds cells and controls what comes in and what goes out of that cell. It is made up of layers of phospholipids whos tails are nonpolar (no charge) and the heads of the Phospholipids are Polar (have a charge). Because of the charges of the phospholipids, some substances can not come into the cell. The reason is their charges are different then the layer and therefore, it repels the substance. However, if the substance has the right charge or is small enough to slip through membrane holes, the substance can get past the Phospholipid bilayer and into the cell. Transport proteins can allow some substances in that would normally not be let in.
Definition
noun
The cell's outer membrane made up of a two layers of phospholipids with embedded proteins. It separates the contents of the cell from its outside environment, and it regulates what enters and exits the cell.
Supplement
In animals the plasma membrane is the outermost covering of the cell whereas in plants, fungi, and somebacteria it is located beneath the [[cell wall].
Word origin: plasma: from Greek, from plassein, to mold.
Synonym: cell membrane, plasmalemma.
See also: fluid mosaic model.
Wiki User
∙ 12y ago
The plasma membrane is a thin, semi-permeable barrier that surrounds and protects the contents of a cell. It regulates the movement of substances in and out of the cell, allowing nutrients to enter and waste to exit. It is made up of a phospholipid bilayer with embedded proteins that help with various cellular functions.
Wiki User
∙ 14y agothe plasma membrane is a vital component of cellular control in both plant and animal cells. Its responsibility is to restrict what can enter or leave the cell. this process is called homeostasis.
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How does nutrients enter a cell?
The plasma membrane.
What is another name for the cell membrane that starts with P and is six letters long?
The cell membrane is also called the plasma membrane.
The cell membrane also is called the?
The cell membrane is also known as the plasma membrane or the cytoplasmic membrane. It is a biological membrane that separates all cells' interior from the outside, though can be permeated by selection ions and molecules. Its basic function is to protect the cell from its surroundings.
What is the structural model of the plasma membrane called-?
structural model of plasma membrane is called the selectively permeable membrane Structural model of the plasma membrane is called Fluid Mosaic Model.
Do plant and animal cells have a plasma membrane?
Yes, both plant and animal cells have a plasma membrane. The plasma membrane is a semi-permeable barrier that surrounds the cell and controls the movement of substances in and out of the cell.
How does nutrients enter a cell?
The plasma membrane.
Another name for plasma membrane?
A cell membrane is also known as a plasma membrane or cytoplasmic membrane. The cell membrane separates the interior of a cell from its outside environment. The main function of a cell membrane is to protect the cell from its surroundings.
How is the plasma membrane of the liver cell?
plasma membrane
What type of membrane is membrane plasma?
The plasma membrane is a phospholipid bilayer membrane that surrounds the cell, serving as a protective barrier. It is selectively permeable, allowing certain molecules to enter and exit the cell. The plasma membrane also contains proteins that help with cell communication and transport.
Is a plasma membrane living?
Yes, Plasma membrane is living .
Do animal and plants have a plasma membrane?
do animal have a plasma membrane
Which cell or cells have a plasma membrane?
ALL CELLS HAVE a plasma membrane
Does a cell membrane have a double plasma membrane?
The plasma membrane is a bi-layer, so yes.
What is the bacterial structure that acts as a selective barrier allowing nutrients to enter the cell and wastes to leave the cell.?
plasma membrane
The cell membrane also is called the?
The cell membrane is also known as the plasma membrane or the cytoplasmic membrane. It is a biological membrane that separates all cells' interior from the outside, though can be permeated by selection ions and molecules. Its basic function is to protect the cell from its surroundings.
What is use of the plasma membrane?
plasma membrane is the outer most covering of the cell,...
Does algae have a plasma membrane?
Yes, algae have plasma membranes. The plasma membrane is a key feature of all living cells, including algae, as it acts as a protective barrier, regulates the movement of molecules in and out of the cell, and helps maintain cellular integrity.
